Presser-foot andthroat-plate for



2 Sheets-Sheet 1.

(No Model.)

- G. McNEIL. PRESSBR FOOT AND THROAT PLATE FOR SEWING MACHINES. No. 605,449.

Patented June 7, 1898.

(No Model.)

- 2 Sheets-Sheat- 2. O. MoNEIL. PRESSER FOOT AND THROAT PLATE FOR SEWING MACHINES.

, Patented Jung 7, 18-98.

CHESTER MCNEIL, OF ROGERS PARK, ILLINOIS, ASSIGNOR TO THE UNION sPECIAI. SEWING MACHINE COMPANY, or CHICAGO, ILLINOIS.

PRESSER=FOOT AND THRQAT-PLAT E FO R' SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 605,449, dated June 7, 1898.

Application filed August 9, 1894.

To all whom it may concern;

Be it known that I, CHESTER- MONEIL, a citizen of the United States, residing at Rogers Park, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Sewing-Machines, of which the following is a description, reference being had to the accompanying drawings and to't11elet-. ters of reference marked thereon.

My invention relates to an improvement in sewing-machines; and my object is to pro vide an attachment for useon machines when it is desired to cover seams on knit goods or to unite the edges thereof. v

The invention consists in the matters hereinafter described, and referred to in the appended claims.

In the accompanying drawings, whichillus trate my inventiomFigure 1 is a plan view illustrating a seam to be covered, the edges being superposed. Fig. 2 is a top'plan view showing the seam after the two rows of stitches have been passed down through the fabric by the two needles. Fig. 2 is a bottom plan view showing the raw edges of the fabric covered by the looper-thread, which passes back and forth between the rows of loops on the under surface of the fabric. Fig. 2 shows in detail the looper and needles. Fig. 2 is a sectional view of the seam shown in Fig. 2. Fig. 3 represents an end view of a machine, showing the presser-foot with the fin and the guide on the cloth-plate. Fig. 3 is aview of the throat-plate of Fig. 3 detached. Fig. 4. is a similar view showing an equivalent but reverse construction. Fig. 4 is aview of the *presser-foot of Fig. 4 detached. Fig. 5 ma plan view of a presser-foot having a slot in which the seam to be covered is guided and having means for varying the width of said slot to accommodate varying widths of seams, and Fig. 6 is a modification in which the entire body portion of the presser-foot is of spring material. Fig. 7 shows my presserfoot and throat-plate when two pieces of fab ric are to be abutted and their edges then united. Fig. 8 is a plan view of my invention in the form used when a selvage and a Serial No. 519,844. (No model.)

raw edge are to be united. Fig. 8 is a detail view showing a modification of the means shown in Fig. 8 for adjusting the fin on the throat-plate. Fig. 9 is a view showing the adjustable fin on the resser-foot, whereby the same may be shifted laterally, this adj ustment being accomplished by means of the plate and screw 7c Z, and with this construction it will be understood that the slot in which the downwardly-turned raw edges of the fabric fit may be varied in width by means similar to those by which the width of the presser-foot slot is varied.

In the drawings, A represents two pieces of fabric whose edges are superposed and united by a single seam, as shown in Fig. 1,

- while inFigs. 2 and 2 the top and bottom of jthe seam after' being covered is shown. In order to make a finished and neat job of coveringthese seams, it is necessary to provide me'ansfor guiding those portions of the fabrics turned at an angle to the body portion thereof. I accomplish this object in several different ways.

As shown in Fig. 3, B represents the needle-bar, a the needles, and C the presser-foot, having openings for the passage of said needies and having'afin b of well-known construction -proj ectin g from the lower side thereof.

D is the throat-plate, of suitable construction,'herein shown as having two upward proj ections 0, between which the projecting edges of I the seam to be covered are guided. In this form of my invention the fabric seamed is fed into the machine with the rough 'side of the seam between the guides c and with the fin b fitting the groove or fold of the seam. (See din Fig. 2.)

In Fig. 4 a reverse of Fig. 3 is shown, in which the fin is on the throat-plate D, and the presser-foot O is slotted, as shown, to guide the rough side of the seam, the seam being crowded down beneath the presser-foot by the cross bar or wire 6 across the rear end of the slot, and in the use of this construction mechanism for making a cross-stitch to cover up the seam would have to be provided to cooperate with the needles. Any form of crossstitch mechanism might be used, comprising either a vibrating needle or thread-carriers reciprocating back and forth across the line of the seam and held down by the needlethreads. There are many forms of these crossstitching devices.

I have shown in Fig. 7 an arrangement of my invention in which theedges of the two pieces of fabric are abutted and then united by any suitable cross-stitch mechanism. In this event the presser-foot is slotted at its forward end, and a fin on the throat-plate projects upward therethrough or perhaps part way into it, and the edges of the goods are placed against the fin and fed forward to the sewing mechanism, which may be of any suitable character, the stitches being laid across a tongue on the throat-plate, or the presser may have the fin extending into a slot in the throat-plate.

It will be noticed that in Fig. 2 I have shown a single under-thread-carrying looper which cooperates with the loops brought down by both needles to weave the thread back and forth between the lines of stitching, thus covering the seam. It will be understood, however, that any suitable stitch mechanism may be provided and that the guiding fin and slot arranged in either the throatplate or the presser-foot may be of great utility when used with other forms of sewing mechanism, and, furthermore, I do not wish to confine myself to the use of the looper carrying a single under thread, as it will be obvious more may be used.

As a further and special improvement I have provided a special construction of presser-foot slotted to receive the seam to be covered and provided with means for adjusting the width of the slot to accommodate fabrics of varying gages.

In the form of presser-foot illustrated in Fig. 5 the presser-foot has a bifurcated forward end, the slot tapering toward the rear and then enlarged for the passage of the needles and provided with the cross-bar c. It has the vertical side pieces f, and a spring E of the form shown is attached by the screw 9 to the presser-foot shank and is bent around to form two forks h, with the slot between. Screws F, passing through the vertical side pieces f, bear upon the ends of the spring, and by tightening or loosening them the ends are brought nearer together or farther apart, thus varying the width of the slot between them.

In Fig. 6 the side pieces f are rigidly attached to the shank, and the body portion is of spring metal, the screws F bearing directly on the forks of the foot, whereby the latter may be properly adjusted.

It is sometimes desirable in uniting fabricsas, for instance, where a selvage edge and a raw edge are to be j oined-to pass the zigzag needle down through only a short distance inside the selvage edge, but a much longer distance inside the raw edge. To provide for this, I have devised the arrangement shown in Fig. 8, in which, in addition to the adjustment of the foot, I make the fin on the throat-plate adjustable by attaching it to a plate 70, adjustable on the throat-plate by the set-screw Z and the guiding-pin m. In Fig. 8 the adj usting-slot and screw are shown in advance of the fin. In this event, as in Fig. 7, the two pieces of fabric would be arranged with their edges against the guiding-fin on the throat-plate (or presser-foot, as the case might be) and the stitches formed over the tongue n on the throat-plate, though of course the presser-foot may have a tongue as Well as keel remaining on the presser-foot, this being an equivalent construction to the adjustment of the presser-foot.

Having thus described my invention,what I claim, and desire to secure by Letters Patent, is

1. In a sewing-machine, the combination with mechanism for passinga plurality of rows of loops through the fabric of a presserfoot and work-plate, a guiding-fin on one of said elements arranged in the line of the scam, the other element being provided with a slot with which said fin is in alinement, and means for varying the width of said slot; substantially as described.

2. In a sewing-machine, the combination with mechanism for making a plurality of rows of stitching, of a presser-foot and workplate, a guiding-fin on one of said elements arranged in a line between the rows of stitching, the other element being provided with a slot with which said fin is in alinement, means for varying the width of said slot, and means also for adjusting the guiding-fin; substantially as described.

3. In a sewing-machine making two paral lel rows of stitching the combination with a presser-foot having a longitudinal slot of a throat plate provided with a longitudinal IIO guiding-fin registering with said slot and arthroat-plate, one 01: said elements being provided With a longitudinal slot and the other element having a fin adapted to register with said slot, with means for adjusting said parts; [0 substantially as described.

In testimony whereof I affix my signature in presence of two Witnesses.

CHESTER MONEIL.

Witnesses:

W. L. SWIFT, M. MONEIL. 

